<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>根据手机号查询会员信息</title>
</head>
<body>
    <h1>请输入手机号：</h1>
    <form action="/submit" method="post">
        <input type="text" name="phoneno" placeholder="手机号">
        <button type="submit">查询</button>
    </form>
</body>
</html>